Interior angle+exterior angle=180
10x +10 +3x -12 =180
13x-2=180
13X+182
X=14 sides
SUM: x + y = 288
DIFFERENCE: + <u>x - y = 48 </u>
2x = 336
x = 168
SUM: x + y = 288 → (168) + y = 288 → y = 120
Answer: 120, 168
2520
= 10 * 252
= 2 * 5 * 2 * 126
= 2 * 5 * 2 * 2 * 63
= 2 * 5 * 2 * 2 * 7 * 3 * 3
= 2^3 * 3^2 * 5 * 7
The answer is the third bubble.
Hope this helps!
